Delete All Scenes with API Question...

[renderiza]

Hi,

Why the following code only deletes some scenes and not all?

Code: Select all

model = Sketchup.active_model
pages = model.pages

pages.each {|page| pages.erase(page)}

A workaround for this issue is...

Code: Select all

model = Sketchup.active_model
pages = model.pages

delete_list = []
pages.each {|page| delete_list << page}
delete_list.each {|page| pages.erase(page)}

But still, I ask why did the first example fail to deliver?

Shortly after this I post stumbled upon this TOPIC and it explained the issue.

[TIG]

When you iterate a collection - like pages, or selection or entities, and change that collection's contents - e.g. by deleting something - then you get issues because the collection changes as a result.
BUT if you 'freeze' the collection, but using .to_a OR perhaps you collect items, which are then deleted afterwards, after you exit using the collection... then it avoids the issue.